Display device and touch sensor with accurate touch detection and low power consumption
US11119604B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2017 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Nov 11, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2354/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display controller controls changing timing of a waveform of each of gate clock signals (GCK1, GCK2) so that a display driving operation is performed after the lapse of a relatively short time from a starting point of time of a horizontal scanning period in odd-numbered horizontal scanning periods (Ho), and that a display driving operation is performed after the lapse of a relatively long time from a starting point of time of a horizontal scanning period in even-numbered horizontal scanning periods (Ho). A touch panel controller outputs a pulse of a touch drive signal (STD) so that a position detection operation on a touch panel is started in a stable period after an end of the display driving operation in each of the odd-numbered horizontal scanning periods (Ho).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.